FragmentIndex
bplustree_node::FragmentIndex(oldValue));
(int)bplustree_node::FragmentIndex(oldValue),
bplustree_node::FragmentIndex(oldValue));
(int)bplustree_node::FragmentIndex(oldValue), duplicateOffset,
bplustree_node::FragmentIndex(childOffset));
static inline uint32 FragmentIndex(off_t link);